this city fought the release of the 9/11 tapes. and new york is not legally bound to make them public. when they disrelease them they scrubbed them heavily. you didn't hear the voices of those who had perished. >> that's the thing about these newtown tapes. it's not so much that -- you're not hearing anything horrific on the tapes. but it's the knowledge of what is occurring in the listener's mind that makes them chilling. >> absolutely. compared to some 911 tapes we've all heard and even played on the air, they are not as horrific. no one whose died voices on the tape you. can't hear any children in the background. so it's not that the tapes are so inflammatory or horrible in and of themselves but they are representative of an event that is probably the worst american public crime since 9/11. >> i think that some of them are pretty desperate. and it is hard to listen. to i only listened to a very few of them trying to make a judgment as to whether to use them. i think when people hear them if they do they will be very upset. you k